K.H.
I would say the sooner, the better, at this point. My son is now 4 months old and we didn't try introducing a bottle of breastmilk until he was 3 months old. He does not like it. No matter which bottle we try, it is not going very well. Definitely won't take it from me (which I expected... why suck on an artificial nipple when the real thing is right behind it, you know?) but my husband has been successful only a handful of times. I have almost cried dumping pumped breast milk that has been refused, down the drain. I want him to be able to take it from someone else -- I don't need or even desire to be away from him, but once in a while it would be nice! My sister introduced her new baby to breastmilk in the bottle at 3 weeks of age, and she is doing great. I definitely think that sooner is better! With my first son, we didn't even try until he was 6 months old, and that was absolutely NOT happening. Good luck!
Kim